Police are hunting scammers believed to be targeting elderly Chinese women in a reported "blessing scam" operating in Perth's CBD.

WA Police have received one report of the scam occurring in the city centre in March, where a victim was approached by a woman while out in a public place.

Police are seeking information about these three women.Credit:WA Police

It's understood the woman said a member of the victim's family was in desperate need for medical help from a "healer", and they required Eastern medicine in order to get better.

The woman asked the victim if she knew any healers.

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At the same time, another woman walks past and pretends to overhear the conversation.

She claims to be a healer, and tells the victim they have "angered the spirits".

The so-called healer then suggests the victim hand over jewellery or other expensive items, which the scammers then switched with low-cost items.

According to police, the returned valuables are wrapped and the victim is given instructions not to unwrap it for a long length of time for a "cleansing" or "treatment" to be effective.

The scam relies heavily on cultural and traditional beliefs to scare victims into complying, and WA Police have released images of three women they believe can help them with their inquiries into the March incident.

Any information regarding the women or the scam are asked to contact Crime Stoppers on 1800 333 000 or make a report online.